Well, they've done the same thing for the "Vaccine"! As mentioned in the above post by Peter Doshi PhD
Merriam-Webster Dictionary Quietly Changes Definition of ‘Vaccine’ to Include COVID-19 mRNA Injection
Merriam-Webster dictionary has quietly changed the definition of the term ‘vaccine’ to include components of the COVID-19 mRNA injection. The definition of vaccine was specifically changed due to the COVID-19 injection.
The definition of ‘vaccine’ as of February 5th 2021:

The definition of ‘vaccine’ as of February 6th 2021:

A vaccine used to be “a preparation of killed microorganisms, living attenuated organisms, or living fully virulent organisms that is administered to produce or artificially increase immunity to a particular disease”, meaning it had nothing to do with mRNA injections, which are not live vaccines and do not use an infectious element.

Merriam-Webster Dictionary Change